(19)

(11)

EP 1 774 704 A1

(12)

(43) Date of publication: 18.04.2007 Bulletin 2007/16 (21) Application number: 05782509.3 (22) Date of filing: 15.06.2005

(51) International Patent Classification (IPC):  H04L 12/24(2006.01) H04L 12/26(2006.01) (86) International application number: PCT/EP2005/010050 (87) International publication number: WO 2005/125098 (29.12.2005 Gazette 2005/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 15.06.2004 US 866812 (71) Applicant: Alcatel Lucent 75008 Paris (FR)	(72) Inventors: SABRY, Charlie Ottawa, Ontario K1S 2A3 (CA) HANES, Gordon Ottawa, Ontario K2P OW6 (CA) JOHNSON, Robert, John Ottawa, Ontario K2H 6Y5 (CA) (74) Representative: Hervouet, Sylvie et al Feray Lenne Conseil, 39/41, avenue Aristide Briand 92163 Anthony Cedex 92163 Anthony Cedex (FR)